This set of Marine Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Integrated Multi-trophic Aquaculture – Set 2”.
1. Polychaete worms can be used for production of __________________
a) seaweed
b) sea urchin
c) cyanobacteria
d) finfish
View Answer
Explanation: Polychaete worms can be used as feed for the production of finfish and crustaceans. By far the most used feed for production of these organisms is juvenile fish whose extensive use has led to non-sustainability.
2. The HUFA profile of wild Penaeus monodon reduces when maintained in captivity.
a) True
b) False
View Answer
Explanation: The HUFA (highly-unsaturated fatty acids) profile of a wild Penaeus monodon breeder reduces due to stress during transit and under captivity. Research has shown that feeding with polychaetes boosts the fatty acids profile.
3. __________________ is the family of polychaete worms.
a) Nereididae
b) Pisciviridae
c) Coronaviridae
d) Iridoviridae
View Answer
Explanation: Nereididae is a family of polychaete worms with over 500 species. Mostly marine species grouped into 42 genera belong to the family. Nereids are semelparous – they breed only once per lifetime.
4. Under culture conditions, life cycle of polychaetes is shortened.
a) True
b) False
View Answer
Explanation: All organisms are capable of reacting to the environment conditions by altering their physiology. Polychaete worms when cultured under controlled conditions reach sexual maturity sooner and also undergo a shortened life cycle.
5. ______________ has a probiotic effect.
a) Bagasse
b) Bacterial catabolic genes
c) Polychaetes
d) Fish slime
View Answer
Explanation: Fish produce a green slime that has probiotic effect. The technique of stock enhancement by integration of diverse fish species in shrimp aquaculture is a way to promote the health of produced shrimp.
6. Which is not an objective of IMTA?
a) Biomitigation
b) Deforestation
c) Economic stability
d) Social acceptability
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Explanation: Integrated multi-trophic aquaculture (IMTA) has three main objectives – biomitigation, economic stability, and social acceptability. Sustainability in marine food production systems is therefore the main goal.
7. Choose the appropriate option.
| 1. Organic extractive species | a. Gracilaria |
| 2. Inorganic extractive species | b. Porphyra |
| 3. Fed species | c. Nereis |
a) 1-c, 2-a, 2-b
b) 1-a, 2-b, 3-c
c) 1-c, 2-b, 3-a
d) 1-b, 2-a, 3-c
View Answer
Explanation: Inorganic extractive species, organic extractive species, and fed species are used to diversify the products arising from multi-trophic aquaculture practice. Depending upon the environment suitability species selection is done.
8. Which are not organic extractive aquaculture species?
a) Seaweeds
b) Filter feeders
c) Deposit feeders
d) Herbivorous fish
View Answer
Explanation: Appropriate proportions of organic extractive species, extractive species, and fed species are cultured in IMTA. Filter feeders, deposit feeders, and herbivorous fish are organic extractive species.
9. Which is not a variation of IMTA?
a) Aquaponics
b) IAAS
c) IFAS
d) RAS
View Answer
Explanation: Depending upon the region and other parameters, IMTA has variations such as aquaponics, integrated agriculture-aquaculture systems (IAAS), integrated peri-urban aquaculture systems (IPUAS) etc.
10. _____________ are micro-algivores.
a) Seaweeds
b) Herbivorous fish
c) Macroalgae
d) Diatoms
View Answer
Explanation: Filter-feeding shellfish and herbivorous fish are micro-algivores because they feed on various species of micro-algae found in fresh water and brackish water. Examples include oysters and silver carp.
Sanfoundry Global Education & Learning Series – Marine Biotechnology.
To practice all areas of Marine Biotechnology, here is complete set of 1000+ Multiple Choice Questions and Answers.
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